Alan and Hannah never landed in the bottom-two couples all season long, so there's a good chance this partnership could take home the mirrorball trophy for Season 28.
"I'm so excited and so incredibly proud of Hannah! She deserves this!" Alan wrote in his blog for Entertainment Tonight.
"After Monday's show ended, we ended up just talking for a while and just thanking each other afterwards. We kinda took a little journey down memory lane. It was so nice. This has been such a beautiful journey. I'm so happy!"
Alan said he and Hannah were approaching the competition on a week by week basis, so the shock of being in the finale apparently hasn't settled in yet for the professional dancer and choreographer.
"Even though being in the finals has been in the back of our minds, we didn't really plan for this! It's such an incredible feeling, I can't even explain it. But we are definitely putting everything into this week!" Alan gushed.
Alan went on to explain why he believes Hannah deserves to be crowned champion of Dancing with the Stars this season.
"She deserves to win the mirrorball because I have never met someone who cares as much as me. It has been so refreshing to see. Hannah is so passionate, she cares so much and she never gives up," Alan revealed.
"I feel like I'm dancing with the female version of me! So, I just want Hannah to know that she is so incredible and I'm so proud of her!"
Alan revealed he and Hannah will perform two dances in the finals.
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"I just want Hannah to feel like a girl boss this week. We're definitely excited. I think the nerves are going to be through the roof, but in a good way!" Alan shared.
"We get to do two dances that mean so much to us. It's a little bittersweet, though, because this will be our last time on the ballroom floor."
Alan wouldn't give away much about the couple's upcoming freestyle, but he teased something big is coming!
"Though I can't give away too much about what we're planning to showcase in the finals, I can say that I think we need to go out with an 'explosion' -- it's gonna be a 'fire' dance!" Alan wrote, adding that this season has been one of his favorites.
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"Out of the four pros left standing... three of us have yet to win a mirrorball," Alan acknowledged in his blog, referencing how Witney is the only former DWTS winner. (Witney won Season 19 with Alfonso Ribeiro).
"For us pros, even making it to the finale is a win in itself," Alan wrote.
"I'm so proud of all the couples that are here with us! It would be incredible to win, but I just care more about Hannah winning!!!! She has worked so hard, sacrificed so much, and had to put up with me all season, LOL.
Hannah and Alan have apparently become the best of friends -- they even call each other "babe" -- since they began working with each other a couple of months ago.
Hannah, for example, brought the former So You Think You Can Dance contestant as her date to the 2019 CMA Awards last week, where the Alabama native stunned in a floor-length white gown that could pass for a wedding dress.
Alan has seen the best and worst of Hannah in recent weeks. The pair has experienced highs together, but Alan has also witnessed several emotional breakdowns on Hannah's part.
For the semi-finals performance show in particular, Hannah had to channel her painful and devastating breakup with The Bachelorette 15 winner Jed Wyatt, a Nashville-based musician who had lied to Hannah about the extent of his dating history leading up to the show.
Hannah had to open up to Alan about how Jed had betrayed her and broken her trust so he could choreograph a meaningful and symbolic contemporary dance for them to perform.
Not only did Jed have a girlfriend back home when he was filming The Bachelorette to promote his music career, but he had also promised the woman, Haley Stevens, they'd resume their romance once he returned home.